World Health Organization. (2003). Safe abortion: Technical and policy guidance for health systems. World Health Organization.
Citazione stile Chigago Style (17a edizione)World Health Organization. Safe Abortion: Technical and Policy Guidance for Health Systems. Geneva: World Health Organization, 2003.
Citatione MLA (9a ed.)World Health Organization. Safe Abortion: Technical and Policy Guidance for Health Systems. World Health Organization, 2003.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.